JP2021066565A - Conveyance device - Google Patents

Abstract

To provide a conveyance device capable of easily adjusting tension of a top chain, reliably conveying a work-piece to a predetermined work position on a work-piece conveyance path, and extending the life by reducing a load applied to the top chain itself.SOLUTION: A conveyance device 1 comprises: a drive unit 10 including a pair of chain wheels 10A and 10B on a driving side and a driven side; and a top chain 5 which is stretched between the pair of chain wheels 10A and 10B and circulates a work-piece conveyance path L1 and a return conveyance path L2. One or a plurality of processing regions F, C for subjecting a work-piece B to predetermined processing is provided in the work-piece conveyance path L1. A magnet torque controller 4 is provided to the chain wheel 10B on the driven side, and uniform tension is always applied to the top chain 5 in the work-piece conveyance path L1.SELECTED DRAWING: Figure 1

Description

The present invention relates to a transport device using a top chain in which a single belt member is connected and is capable of holding a work such as a container. In particular, the work is filled with contents on the work transport path. The present invention relates to a transport device provided with one or more processing areas for performing the predetermined processing.

Conventionally, a top chain that is formed by connecting a single belt member and can hold a work such as a container has been used, and a transport device for performing work at a predetermined position provided on the transport path for the work has been used. Has been done.

As a specific configuration of the transport device, a top chain in which a holding transport member for holding a work is attached to the belt member is hung between a pair of sprockets, and the top chain is hung along the transport path. By traveling while being supported by the arranged guide rails, it is possible to exemplify a configuration in which the work held by the work holding and transporting member is transported to a predetermined work position (whether intermittent or continuous). (See Patent Document 1).

Japanese Unexamined Patent Publication No. 10-202479

In the transport device having such a configuration, the connecting portion of each belt member may be bent due to the weight of the work or the like, and the top chain may be stretched or loosened in the transport direction. In particular, when the transfer device is such that the contents are filled at one work position and then transferred to another work position on the downstream side during the transfer of an empty container as a work, a series of operations are performed. Since the weight of the work differs in the process of transporting the work, a state in which the mileage at each place is not constant may occur, and a problem may occur in which the work cannot be sent to a predetermined work position. In particular, when the weight of the work is applied to each single belt member, bending is likely to occur at the connecting portion between adjacent belt members.

As a transport device capable of eliminating such a problem, the above-mentioned Patent Document 1 provides a mechanism for pulling a sprocket disposed on the upstream side in the anti-arrangement direction of the transport path to tension the top chain. It is proposed to prepare.

However, the method of pulling one of the sprockets in the anti-arrangement direction of the transport path to give tension to the top chain (tension is applied) puts a large load on the top chain to which the workpiece holding and transporting member is mounted. As a result, there are problems such as shortening the life (useful life) of the top chain and further extending it due to aging deterioration. Furthermore, on-site work to readjust the tension depends on the experience and skills of the worker, and maintenance and adjustment are often required, which is also a problem to be solved.

The present invention has been made in view of such problems, the tension of the top chain can be easily adjusted, the work can be reliably conveyed to a predetermined work position on the work transfer path, and the work can be reliably conveyed. It is an object of the present invention to provide a transport device capable of reducing the load on the top chain itself and extending the life.

In order to achieve the above-mentioned object, the transport device of the present invention is formed in an endless shape by connecting a drive unit including a pair of chain wheels on the drive side and the driven side and a single belt member, and the pair of chains. It has a work transfer path that is hung between wheels and is provided above, and a top chain that circulates between a return transfer path provided below, and is predetermined for the work to be conveyed to the work transfer path. A transport device provided with one or more processing regions for processing, in which a magnet torque controller is provided on the driven chain wheel to constantly apply uniform tension to the top chain in the work transfer path. It is characterized by being configured in.

According to the transfer device of the present invention, the tension of the top chain traveling on the work transfer path can be numerically managed and adjusted by the magnet torque controller, which is convenient and depends on the experience value and skill of the operator. The part is extremely small. Further, the load for ensuring uniform tension needs to be applied only in the work transfer path provided above, and the tension of the top chain can be released in the return transfer path provided below. , It is possible to significantly extend the life of the top chain.

Then, since the tension of the top chain traveling on the work transport path becomes uniform, the work can be reliably transported without being displaced to a predetermined work position on the transport path.

Further, the transport device of the present invention is characterized in that the belt member is provided with attachments for holding the workpieces at predetermined intervals on the top chain.

According to the transport device of the present invention, the work can be firmly held by the attachment, and the connecting portion between the belt member on which the weight of the attachment and the work is applied and the belt member adjacent thereto also has the tension on the top chain by the magnet torque controller. Since it does not loosen due to the application, the work can be reliably transported without being displaced to a predetermined work position on the transport path.

As described above, according to the transport device of the present invention, the tension of the top chain can be easily adjusted, the work can be reliably transported to a predetermined work position on the transport path, and the top chain itself is related. The load can be reduced and the life can be extended.

Schematic front view showing an embodiment of the transport device of the present invention. Top view of the main part of the transport device of the present invention Front view of the main part of the transport device of the present invention

As shown in FIG. 1, the transfer device 1 of the present embodiment has a nozzle that fills the container B with a liquid filling material as a content on the transfer path (work transfer path) L1 of the container B as a work. A filling region F in which a filling machine 101 provided with 102 is arranged, and a winding device 201 provided with a chuck 202 for winding a cap around the mouth of a container B filled with contents on the downstream side thereof. This is a transport device 1 provided with a winding tightening region C. The most upstream stream in the work transfer path L1 is the loading section S of the container B, and the most downstream is the collecting section E of the filled container B.

Specifically, in the transport device 1, the drive-side chain wheel 10A and the driven-side chain wheel 10B constituting the drive unit 10 are separated from each other on the upstream side and the downstream side in the transport direction of the container B, and their respective rotations are performed. The shafts (centers of rotation) are arranged horizontally and in parallel on the three bases of the transport device 1. In the present embodiment, the drive-side chain wheel 10A can rotate by transmitting the driving force of the servomotor 3 as a driving source via a transmission system (not shown). Then, as shown in FIGS. 2 and 3, a magnet torque controller (permanent historque controller) 4 arranged on the side surface of the base 2 is attached to the driven side chain wheel 10B to rotate the driven side chain wheel 10B. It is provided so as to be connected to the shaft. Since the magnet torque controller 4 is a known mechanism that has a built-in permanent magnet and transmits torque by using the magnetic force thereof, the description thereof will be omitted.

Then, between the pair of chain wheels 10A and 10B, a work transfer path L1 provided above the rotation axis of the chain wheels 10A and 10B and a work transfer path L1 provided below the rotation axis are opposite to the work transfer path L1. The top chain 5 is hung so as to circulate with the return transport path L2 traveling in the direction. That is, of the traveling paths of the top chain 5, the section in which the container B can be held and transported on the surface of the top chain 5 is defined as the work transfer path L1.

If necessary, guide rails 6 may be provided on both sides of the work transfer path L1 of the base 2. Further, the base 2 may be provided with a guide table 7 that slidably supports the top chain 5 traveling on the return transport path L2 from below along the traveling direction.

Here, the top chain 5 is made of resin or the like and meshes with the plate-shaped main body 5A formed on a flat surface on which the work can be placed and the tooth portions 10a formed on the outer periphery of the pair of chain foils 10A and 10B. A single belt member 5A integrally formed with a chain portion (not shown) is connected by a joint pin (not shown) to form an endless shape.

In the present embodiment, the belt member 5A of the top chain 5 is equipped with an attachment 8 for holding the container B in the work transfer path L1 with its mouth facing upward. It should be noted that the arrangement of the attachments 8 does not have to be all the belt members 5A, and the arrangement interval can be adjusted by, for example, arranging the attachments 8 on every other belt member 5A.

Then, in the transport device 1 of the present embodiment, in the top chain 5 spanned between the pair of chain wheels 10A and 10B, the drive side chain wheel 10A to which the driving force of the servomotor 3 is transmitted rotates. The chain wheel 10B on the driven side also travels in a predetermined direction, and the chain wheel 10B on the driven side also rotates driven by the driving force transmitted from the traveling top chain 5. At that time, with respect to the chain wheel 10B on the driven side, the magnet torque controller 4 constantly determines whether or not the container B is mounted on the belt member 5A in the work transfer path L1. A uniform tension is applied regardless of the situation such as whether or not the material is filled. In other words, the magnet torque controller 4 is numerically set and adjusted to keep the tension of the top chain 5 traveling on the work transfer path L1 constant. Specifically, by driving the servomotor 3, the driving side that rotates the top chain 5 in the direction of the driven side chain wheel 10B to the driving side chain wheel 10A in the work transfer path L1 in FIG. By setting the rotation of the driven side chain wheel 10B to be slightly slower than that of the chain wheel 10A of the above, a load is applied to the top chain 5 spanned between the pair of chain wheels 10A and 10B in the work transfer path L1 and tension is applied. Can be heightened and strained.

At this time, since the connecting portion of each belt member 5A traveling on the work transfer path L1 also extends uniformly, the transfer speed of the container B is always constant. Therefore, in the filling region F arranged on the work transfer path L1, the elevating position of the nozzle 102 provided in the filling machine 101 and the transfer position of the container B are matched, or the nozzle 102 being filled is placed in the container B. When a filling method is adopted in which the filling nozzle 102 is raised while moving along the work transfer path L1 in accordance with the transfer of the container B, the position of the container B and the nozzle 102 is displaced. Can be avoided. Similarly, in the winding region C, it is possible to accurately match the mouth portion of the container B with the cap gripped by the chuck 202.

As described above, the transfer device 1 of the present embodiment can solve the problem of fluctuation in the transfer distance of the work due to the extension or loosening of the top chain 5, and is provided in various processing areas of the work transfer path L1. Accurate alignment of the work with other devices can also be performed.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

In the present embodiment, the container B is assumed as the work, and the filling machine 101 and the winding device 201 are assumed as the processing devices that require positioning with the work provided in the work transfer path L1, but the processing area and processing of the work are assumed. The device is not limited to this.

1 Conveyor 2 Base 3 Servo motor 4 Magnet controller 5 Top chain 5A Belt member
5a Plate-shaped body 6 Guide rail 7 Guide table 8 Attachment 10 Drive unit 10A Drive side chain wheel 10B Drive side chain wheel 10a Tooth part B Container L1 Work transfer path L2 Return transfer path F Filling area 101 Filling machine 102 Nozzle C Winding area 201 Winding device 202 Chuck S Carry-in part E Recovery part

Claims (2)

A drive unit having a pair of chain wheels on the drive side and a driven side and a single belt member are connected to form an endless shape, which is hung between the pair of chain wheels to provide a work transfer path and an upper work transfer path. A transport device having a top chain that circulates in a return transport path provided below, and the work transport path is provided with one or a plurality of processing areas for performing predetermined processing on the workpiece to be transported. The transport device is characterized in that a magnet torque controller is provided on the driven chain wheel so as to constantly apply a uniform tension to the top chain in the work transport path. The transport device according to claim 1, wherein the top chain is provided with attachments for holding the workpieces at predetermined intervals on the belt member.

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